def cracked_concrete_plots(c: Config):
"""Contour plots of cracked concrete scenarios."""
response_type = ResponseType.YTranslation
# 10 x 10 grid of points on the bridge deck where to record fem.
points = [
Point(x=x, y=0, z=z) for x, z in itertools.product(
np.linspace(c.bridge.x_min, c.bridge.x_max, 10),
np.linspace(c.bridge.z_min, c.bridge.z_max, 10),
)
]
# Create empty traffic array and collect fem.
response_array = responses_to_traffic_array(
c=c,
traffic_array=load_normal_traffic_array(c)[0],
response_type=response_type,
bridge_scenario=cracked_scenario,
points=points,
sim_runner=OSRunner,
)
for t in range(len(response_array)):
top_view_bridge(c.bridge, abutments=True, piers=True)
responses = Responses.from_responses(
response_type=response_type,
responses=[(response_array[t][p], point)
for p, point in enumerate(points)],
)
plot_contour_deck(c=c, responses=responses, center_norm=True)
plt.title("Cracked Concrete")
plt.savefig(c.get_image_path("cracked-scenario", f"cracked-time-{t}"))
plt.close()
def pairwise_cluster(c: Config, load: bool):
"""Cluster pairwise maps from healthy and damaged scenarios."""
features_path = c.get_data_path("features", "pairwise-cluster", bridge=False)
if not load:
normal_traffic_array, _ = load_normal_traffic_array(c=c, mins=24)
normal_traffic_array = normal_traffic_array[
int(len(normal_traffic_array) / 24) :
]
response_type = ResponseType.YTranslation
grid_points = [
Point(x=x, y=0, z=-9.65)
for x, _ in itertools.product(
np.linspace(c.bridge.x_min, c.bridge.x_max, 50),
# np.linspace(c.bridge.x_min, c.bridge.x_max, 4),
[1],
)
]
# Collect a list of features per scenarios scenario.
features = []
for damage_scenario in healthy_and_cracked_scenarios[1:]:
damage_c = damage_scenario.use(c)
responses = responses_to_traffic_array(
c=damage_c,
traffic_array=normal_traffic_array,
response_type=response_type,
bridge_scenario=damage_scenario,
points=grid_points,
sim_runner=OSRunner,
).T
ks_values = []
for p0_i, point0 in enumerate(grid_points):
print_i(f"Point {p0_i + 1} / {len(grid_points)}", end="\r")
ks_values.append([])
for p1_i, point1 in enumerate(grid_points):
ks = ks_no_outliers(responses[p0_i], responses[p1_i])
ks_values[-1].append(ks)
features.append((ks_values, damage_scenario.name))
# Save features to disk.
features = np.array(features)
np.save(features_path, features)
features = np.load(features_path)
# Reduce each pairwise map to a sum per sensor.
for f_i, (feature, feature_name) in enumerate(features):
features[f_i] = ([sum(sensor) for sensor in feature], feature_name)
features[f_i] = ([sum(sensor) for sensor in features[f_i]], feature_name)
# Cluster each pairwise map.
from sklearn.cluster import KMeans
kmeans = KMeans(n_clusters=2)
kmeans.fit(features)
def traffic_response_plots(c: Config, times: int = 3):
"""Response to normal traffic per scenarios scenario at multiple time steps."""
response_type = ResponseType.YTranslation
# 10 x 10 grid of points on the bridge deck where to record fem.
points = [
Point(x=x, y=0, z=z) for x, z in itertools.product(
np.linspace(c.bridge.x_min, c.bridge.x_max, 10),
np.linspace(c.bridge.z_min, c.bridge.z_max, 10),
)
]
# for damage_scenario in all_scenarios(c):
for damage_scenario in [unit_temp_scenario]:
response_array = responses_to_traffic_array(
c=c,
traffic_array=load_normal_traffic_array(c, mins=1)[0],
response_type=response_type,
bridge_scenario=damage_scenario,
points=points,
sim_runner=OSRunner,
)
print(response_array.shape)
mean_response_array = np.mean(response_array, axis=0).T
print(mean_response_array.shape)
print(mean_response_array.shape)
for t in range(times):
time_index = -1 + abs(t)
top_view_bridge(c.bridge, abutments=True, piers=True)
responses = Responses.from_responses(
response_type=response_type,
responses=[(response_array[time_index][p], point)
for p, point in enumerate(points)],
)
plot_contour_deck(c=c,
responses=responses,
center_norm=True,
levels=100)
plt.title(damage_scenario.name)
plt.savefig(
c.get_image_path(
"contour-traffic-response",
f"{damage_scenario.name}-time={time_index}",
))
plt.close()
def oneclass(c: Config):
normal_traffic_array, traffic_scenario = load_normal_traffic_array(c)
bridge_scenarios = [HealthyScenario()] + each_pier_scenarios(c)
response_type = ResponseType.YTranslation
points = [
Point(x=x, y=0, z=z)
for x, z in itertools.product(
np.linspace(c.bridge.x_min, c.bridge.x_max / 2, 20),
np.linspace(c.bridge.z_min, c.bridge.z_max / 2, 3),
)
]
results = []
for b, bridge_scenario in enumerate(bridge_scenarios):
print_i(f"One class: bridge scenario {bridge_scenario.name}")
responses = responses_to_traffic_array(
c=c,
traffic_array=normal_traffic_array,
response_type=response_type,
bridge_scenario=bridge_scenario,
points=points,
fem_runner=OSRunner(c),
).T
print(len(normal_traffic_array))
print(responses.shape)
# Fit on the healthy scenario.
if b == 0:
assert len(responses) == len(points)
clfs = []
for r, rs in enumerate(responses):
print_i(f"Training classifier {r} / {len(responses)}")
clfs.append(OneClassSVM().fit(rs.reshape(-1, 1)))
scenario_results = []
for p, _ in enumerate(points):
print_i(f"Predicting points {p} / {len(points)}")
prediction = clfs[p].predict(responses[p].reshape(-1, 1))
print(prediction)
print(len(prediction[prediction < 0]))
print(len(prediction[prediction > 0]))
def gradient_pier_displacement_plot(
c: Config,
pier_disp: PierSettlementScenario,
response_type: ResponseType,
title: str,
):
"""Contour plot of piers displaced in an increasing gradient."""
# 10 x 10 grid of points on the bridge deck where to record fem.
points = [
Point(x=x, y=0, z=z) for x, z in itertools.product(
np.linspace(c.bridge.x_min, c.bridge.x_max, 10),
np.linspace(c.bridge.z_min, c.bridge.z_max, 10),
)
]
# Create empty traffic array and collect fem.
response_array = responses_to_traffic_array(
c=c,
traffic_array=np.zeros(
(1, len(c.bridge.wheel_tracks(c)) * c.il_num_loads)),
response_type=response_type,
bridge_scenario=pier_disp,
points=points,
fem_runner=OSRunner(c),
)
top_view_bridge(c.bridge, abutments=True, piers=True)
responses = Responses.from_responses(
response_type=response_type,
responses=[(response_array[0][p], point)
for p, point in enumerate(points)],
)
plot_contour_deck(c=c, responses=responses, center_norm=True)
plt.title(title)
plt.savefig(
c.get_image_path("pier-scenarios",
f"pier-displacement-{safe_str(title)}"))
plt.close()
def pairwise_sensors(c: Config, dist_measure=ks_no_outliers):
"""Compare distribution of pairs of sensors under HealthyScenario."""
normal_traffic_array, traffic_scenario = load_normal_traffic_array(c)
response_type = ResponseType.YTranslation
points = [
Point(x=x, y=0, z=z)
for x, z in itertools.product(
np.linspace(c.bridge.x_min, c.bridge.x_max, 50),
np.linspace(c.bridge.z_min, c.bridge.z_max, 4),
)
]
bridge_scenario = HealthyScenario()
responses = responses_to_traffic_array(
c=c,
traffic_array=normal_traffic_array,
response_type=response_type,
bridge_scenario=bridge_scenario,
points=points,
sim_runner=OSRunner,
).T
assert len(responses) == len(points)
ks_values_healthy = []
for p0, point0 in enumerate(points):
print_i(f"Point {p0 + 1} / {len(points)}")
ks_values_healthy.append([])
for p1, point1 in enumerate(points):
ks = dist_measure(responses[p0], responses[p1])
ks_values_healthy[-1].append(ks)
plt.landscape()
plt.imshow(ks_values_healthy)
plt.savefig(c.get_image_path("joint-clustering", "healthy-bridge"))
plt.close()
bridge_scenario = each_pier_scenarios(c)[0]
responses = responses_to_traffic_array(
c=c,
traffic_array=normal_traffic_array,
response_type=response_type,
bridge_scenario=bridge_scenario,
points=points,
sim_runner=OSRunner,
).T
assert len(responses) == len(points)
ks_values_damage = []
for p0, point0 in enumerate(points):
print_i(f"Point {p0 + 1} / {len(points)}")
ks_values_damage.append([])
for p1, point1 in enumerate(points):
ks = dist_measure(responses[p0], responses[p1])
ks_values_damage[-1].append(ks)
plt.imshow(ks_values_damage)
plt.savefig(c.get_image_path("joint-clustering", "scenarios-bridge"))
plt.close()
ks_values_comp = []
for p0, point0 in enumerate(points):
ks_values_comp.append([])
for p1, point1 in enumerate(points):
comp = abs(ks_values_healthy[p0][p1] - ks_values_damage[p0][p1])
ks_values_comp[-1].append(comp)
plt.landscape()
plt.imshow(ks_values_comp)
plt.savefig(c.get_image_path("joint-clustering", "scenarios-bridge-comp"))
plt.close()
responses = Responses.from_responses(
response_type=response_type,
responses=[(sum(ks_values_comp[p]), point) for p, point in enumerate(points)],
)
top_view_bridge(c.bridge, abutments=True, piers=True)
plot_contour_deck(c=c, responses=responses)
plt.savefig(c.get_image_path("joint-clustering", "scenarios-bridge-comp-contour"))
plt.close()
def events(c: Config, x: float, z: float):
"""Plot events due to normal traffic."""
point = Point(x=x, y=0, z=z)
# 10 seconds of 'normal' traffic.
max_time = 10
traffic_scenario = normal_traffic(c=c, lam=5, min_d=2)
# Create the 'TrafficSequence' and 'TrafficArray'.
traffic_sequence = traffic_scenario.traffic_sequence(
bridge=c.bridge, max_time=max_time
)
traffic_array = to_traffic_array(
c=c, traffic_sequence=traffic_sequence, max_time=max_time
)
# Find when the simulation has warmed up, and when 'TrafficArray' begins.
warmed_up_at = traffic_sequence[0][0].time_left_bridge(c.bridge)
traffic_array_starts = (int(warmed_up_at / c.sensor_hz) + 1) * c.sensor_hz
print(f"warmed up at = {warmed_up_at}")
print(f"traffic_array_starts = {traffic_array_starts}")
traffic_array_ends = traffic_array_starts + (len(traffic_array) * c.sensor_hz)
print(f"traffic_array_ends = {traffic_array_ends}")
point_lane_ind = c.bridge.closest_lane(z)
vehicles = list(set(ts[0] for ts in traffic_sequence))
print(len(vehicles))
print(vehicles[0])
vehicles = sorted(
set(ts[0] for ts in traffic_sequence if ts[0].lane == point_lane_ind),
key=lambda v: -v.init_x_frac,
)
print(len(vehicles))
print(vehicles[0])
event_indices = []
vehicle_times = [v.time_at(x=x - 2, bridge=c.bridge) for v in vehicles]
for v, t in zip(vehicles, vehicle_times):
print(f"Vehicle {v.init_x_frac} {v.mps} at time {t}")
start_time = int(t / c.sensor_hz) * c.sensor_hz
print(f"start_time = {start_time}")
ta_start_time = np.around(start_time - traffic_array_starts, 8)
print(f"ta start time = {ta_start_time}")
ta_start_index = int(ta_start_time / c.sensor_hz)
print(f"ta start index = {ta_start_index}")
ta_end_index = ta_start_index + int(c.event_time_s / c.sensor_hz)
print(f"ta end index = {ta_end_index}")
if ta_start_index >= 0 and ta_end_index < len(traffic_array):
event_indices.append((ta_start_index, ta_end_index))
print(event_indices)
responses = (
responses_to_traffic_array(
c=c,
traffic_array=traffic_array,
response_type=ResponseType.YTranslation,
damage_scenario=healthy_scenario,
points=[point],
sim_runner=OSRunner(c),
)
* 1000
)
# fem = add_displa_noise(fem)
print(responses.shape)
plt.portrait()
for event_ind, (event_start, event_end) in enumerate(event_indices):
plt.subplot(len(event_indices), 1, event_ind + 1)
plt.plot(responses[event_start : event_end + 1])
plt.tight_layout()
plt.savefig(c.get_image_path("classify/events", "events.pdf"))
plt.close()
def crack_time_series(
c: Config,
traffic_array,
traffic_array_mins: float,
sensor: Point,
crack_frac: float,
damage,
temps: List[float],
solar: List[float],
):
"""Time series of sensor fem, vertical translation and strain XXB.
Returns a NumPy array of dimensions (2 x len(traffic_array)).
Args:
c: Config, global configuration object.
traffic_array: TrafficArray, traffic flowing over the bridge.
traffic_array_mins: float, minutes of the the traffic flow.
sensor: Point, point at which to collect fem.
crack_frac: float, fraction of time series where crack occurs.
damage: DamageScenario, scenarios that occurs at crack_frac.
temps: List[float], list of air temperature, per temperature minute.
solar: List[float], list of solar radiance, per temperature minute.
"""
assert 0 <= crack_frac <= 1
response_types = [ResponseType.YTranslation, ResponseType.Strain]
half_i = int(len(traffic_array) * crack_frac)
traffic_array_0, traffic_array_1 = traffic_array[:half_i], traffic_array[
half_i:]
assert len(traffic_array_0) + len(traffic_array_1) == len(traffic_array)
half_t = int(len(temps) * crack_frac)
assert len(temps) == len(solar)
# Get the effect of temperature for both response types and damages.
# In each case we have the full days worth of temperature fem.
temp_effect = []
for response_type in response_types:
temp_effect_damages = []
for di, ds in enumerate([HealthyDamage(), damage]):
bots_tops, new_temp_effect = temperature.effect(
c=ds.use(c)[0],
response_type=response_type,
points=[sensor],
# One hour temperature data per minute of traffic data.
len_per_hour=int(len(traffic_array) /
traffic_array_mins) if di == 0 else None,
temps=temps if di == 0 else None,
solar=solar if di == 0 else None,
temps_bt=bots_tops.T[int(len(bots_tops.T) /
2):].T if di == 1 else None,
ret_temps_bt=True,
)
bots_tops = np.array(bots_tops)
temp_effect_damages.append(
new_temp_effect[0] if di ==
1 else new_temp_effect[0][:int(len(new_temp_effect[0]) / 2)])
temp_effect.append(np.concatenate(temp_effect_damages))
print(f"len(temps) = {len(temps)}")
print(f"len_per_hour = {int(len(traffic_array) / traffic_array_mins)}")
print(f"Temperature shape = {temp_effect[-1].shape}")
plt.plot(temp_effect[-1])
plt.savefig(
c.get_image_path("crack",
safe_str(f"save-temps-{response_type}.pdf")))
plt.close()
responses = []
for ri, rt in enumerate(response_types):
responses_healthy_cracked = []
for ds, ta in [(HealthyDamage(), traffic_array_0),
(damage, traffic_array_1)]:
print(
f"Sections in scenarios scenario = {len(ds.use(c)[0].bridge.sections)}"
)
responses_healthy_cracked.append(
responses_to_traffic_array(
c=c,
traffic_array=ta,
response_type=rt,
damage_scenario=ds,
points=[sensor],
).T[0]) # Responses from a single point.
responses.append(np.concatenate(responses_healthy_cracked))
print(f"shape fem without temp = {responses[-1].shape}")
print(f"shape of temp effect = {temp_effect[ri].shape}")
if rt == ResponseType.Strain:
responses[ri] = resize_units("")[0](responses[ri])
responses[ri] += temperature.apply(temp_effect[ri], responses[ri])
responses = np.array(responses)
print(f"Responses shape = {responses.shape}")
return responses